CN117682336B

CN117682336B - Spiral feed hopper of predrying machine

Info

Publication number: CN117682336B
Application number: CN202311783809.1A
Authority: CN
Inventors: 范琪; 范炳洪; 王成轩
Original assignee: Changzhou Fanqun Drying Equipment Co ltd
Current assignee: Changzhou Fanqun Drying Equipment Co ltd
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-05-17
Anticipated expiration: 2043-12-22
Also published as: CN117682336A

Abstract

The application discloses a screw feed hopper of a pre-dryer, and belongs to the technical field of screw conveying. The feeding mechanism comprises a frame, a bottom plate is arranged at the bottom of the frame, a feeding hopper is fixed on the frame, a conveying assembly is arranged on the bottom plate and comprises a conveying pipe, the conveying pipe is communicated with the feeding hopper, a discharging pipe is arranged at the position, close to the right side end, of the conveying pipe, a screw rod is of an integrated structure consisting of a shaft rod and a screw blade, the screw blade is arranged in the conveying pipe, the shaft rod penetrates through the conveying pipe and is movably connected with the conveying pipe, an adjusting mechanism is provided with a connecting shaft fixedly connected with the shaft rod, a driving wheel is arranged at the left side end of the connecting shaft, and a driving sleeve is fixed at the output end of the first motor. The screw feed hopper of the pre-dryer achieves the effect of preventing the material from being clamped between the outer edge of the screw blade and the shell on the premise of not affecting the conveying efficiency of the material.

Description

Spiral feed hopper of predrying machine

Technical Field

The application relates to the technical field of spiral conveying, in particular to a spiral feed hopper of a pre-dryer.

Background

The pre-dryer is equipment for carrying out primary drying treatment on materials by using hot air or steam, and mainly has the function of quickly removing moisture on the surfaces of the materials to enable the materials to reach a certain drying degree so as to facilitate subsequent processing and use, and is widely applied to industries such as food, medicines, chemical industry and the like, and meanwhile, when the pre-dryer works, a spiral feed hopper is usually adopted to convey the materials into the pre-dryer so as to carry out primary drying on the materials;

As disclosed in chinese patent publication No. CN110817297a, an anti-seize screw conveyor is specifically disclosed, in which it is proposed that in the existing screw conveyor, there is a gap between the outer edge of the screw blade and the housing, and in the material conveying direction, there is the same gap between the outer edge of the screw blade and the housing, and there is a possibility that the material in the housing is seized between the screw blade and the housing;

Meanwhile, the anti-blocking screw conveyor disclosed in the patent is mainly characterized in that a gap between the outer edge of the screw blade and the shell is gradually increased along the material conveying direction, so that the situation of blocking materials is prevented;

However, in the operation process of the screw conveyor, when the viscous or caking-prone material is conveyed, the gap between the inner wall of the housing and the screw blade is gradually increased along the conveying direction of the material, so that the material is easy to accumulate at the gap, adhere to the inner wall of the housing or caking on the inner wall of the housing, influence the flow and conveying of the subsequent material, and further have a certain influence on the conveying efficiency of the material, so that it is necessary to provide a screw feeding hopper of the pre-dryer to solve the above problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the present application aims to solve the problems: the utility model provides a pre-drier spiral feeder hopper, reaches under the prerequisite that does not influence the conveying efficiency of material, prevents the effect of card material between helical blade's outward flange and the casing.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a pre-drier spiral feeder hopper, includes the frame, installs the bottom plate on this frame bottom, the feeder hopper, this feeder hopper is fixed in on the frame, conveying component, this conveying component install in on the bottom plate, conveying component includes the conveyer pipe, this conveyer pipe is linked together with the feeder hopper, the conveyer pipe is close to right side tip department and is provided with the discharging pipe, screw, this screw comprises axostylus axostyle and helical blade's integral type structure, helical blade is in the conveyer pipe, the axostylus axostyle run through in conveyer pipe and with conveyer pipe swing joint, adjustment mechanism have with axostylus axostyle looks fixed connection's connecting axle, be provided with the drive wheel on the left side tip of connecting axle, first motor is fixed with the drive cover on the output of this first motor, the drive wheel is suitable for the card to hold in the drive cover, the connecting axle is suitable for driving under external driving the axostylus axostyle removes along conveyer pipe inner wall, so as to prevent helical blade outer edge with card material between conveyer pipe inner wall.

Further, the adjusting mechanism comprises a fixed seat and a second sliding rail arranged on the fixed seat, a sliding plate is slidably arranged on the second sliding rail, a second bearing seat is fixedly arranged on the sliding plate, and the connecting shaft is arranged on the second bearing seat.

Further, the bottom of the sliding plate is provided with an adjusting part, the adjusting part comprises a second motor and a driving shaft connected with the output end of the second motor, an adjusting gear is fixedly arranged on the driving shaft, and the bottom of the sliding plate is provided with a rack meshed with the adjusting gear.

Further, a pedestal is fixed on the right side of the frame, a sliding part is arranged on the pedestal and consists of a first sliding rail and a first bearing seat which is slidably arranged on the first sliding rail, and the right end part of the shaft rod is arranged on the first bearing seat.

Further, a first tooth is arranged on the outer ring of the driving wheel, a driving cavity is formed in the driving sleeve, a tooth slot which is clamped with the first tooth is formed in the inner wall of the driving cavity, and the driving wheel is suitable for being clamped into the driving cavity under the matching of the first tooth and the tooth slot.

Further, the drive wheel is always located within the drive cavity, the drive wheel being adapted to move within the drive cavity.

Further, a side plate is fixed on the left side of the fixing seat, a steering mechanism is mounted on the side plate and comprises an outer gear ring mounted on the side plate through a bearing, the outer gear ring is fixedly connected with the driving sleeve and forms a barrel structure, and the outer gear ring is suitable for being driven by the first motor to synchronously rotate with the driving sleeve.

Further, two groups of planetary gears are arranged on the inner side of the outer gear ring, two groups of planetary gear bearings are mounted on the side plates, the two groups of planetary gears are meshed with the inner side of the outer gear ring, the driving wheel is matched with the two groups of planetary gears, and the driving wheel is suitable for being driven by the sliding plate to approach the planetary gears and meshed with the two groups of planetary gears.

Further, the first motor and the second motor are electrically connected with a PLC control system, and the PLC control system is suitable for performing switching control between the second motor and the first motor and controlling the driving speed and the rotating direction of the output end of the first motor.

The beneficial effects of the application are as follows: according to the screw feed hopper of the pre-dryer, materials are normally conveyed under the forward rotation action of the first motor, the screw is suitable for moving in the conveying pipe through the cooperation of the adjusting part, and the screw is driven to rotate through the first motor through the cooperation of the steering mechanism and the driving wheel, so that the effect of preventing materials from being clamped between the outer edge of the screw blade and the inner wall of the conveying pipe on the premise that the conveying efficiency of the materials is not affected is achieved.

In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

In the drawings:

FIG. 1 is an overall schematic of a pre-dryer screw feed hopper according to the present application;

FIG. 2 is a schematic diagram of FIG. 1 in semi-section;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

FIG. 4 is an enlarged schematic view at B in FIG. 2;

FIG. 5 is a schematic view of the adjusting mechanism of FIG. 4;

FIG. 6 is an enlarged schematic view of FIG. 5 at C;

FIG. 7 is a schematic view of the steering mechanism of FIG. 4;

wherein, each reference sign in the figure:

1. a frame; 11. a feed hopper; 111. a feed inlet; 12. a pedestal; 2. a bottom plate;

3. A transport assembly; 31. a first motor; 32. a helical screw; 321. a shaft lever; 322. a helical blade; 33. a delivery tube; 331. a material conveying port; 332. a discharge pipe; 333. a retention chamber; 34. a first bearing seat; 35. a first slide rail;

4. An adjusting mechanism; 41. a fixing seat; 411. a side plate; 412. a receiving groove; 42. a second slide rail; 43. a slide plate; 44. a second bearing seat; 45. a connecting shaft; 451. a driving wheel; 452. a first tooth; 46. a second motor; 461. a drive shaft; 47. a rack; 48. an adjusting gear;

5. A drive sleeve; 51. a drive chamber; 52. tooth slots; 6. a steering mechanism; 61. an outer ring gear; 62. and (3) a planet wheel.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

Embodiment one:

As shown in fig. 1, the application provides a screw feed hopper of a pre-dryer, which is mainly applied to conveying materials into the pre-dryer, and avoids accumulation or blockage phenomena, and ensures uniform distribution of the materials in the pre-dryer;

The embodiment specifically explains the basic structure and the working principle of the spiral feeding hopper, and specifically:

As shown in fig. 1-2, the screw feed hopper comprises a frame 1, a feed hopper 11 is mounted on the frame 1, the feed hopper 11 is used for conveying materials, the top of the feed hopper 11 is fixedly connected with the top of the frame 1, so that the position of the feed hopper 11 is fixed, the feed hopper 11 is arranged in a penetrating way, a feed inlet 111 is formed at the top of the feed hopper 11, and materials are fed into the feed hopper 11 through the feed inlet 111;

Simultaneously, a bottom plate 2 is fixedly arranged near the bottom of the frame 1, a conveying assembly 3 is arranged on the bottom plate 2, the conveying assembly 3 is used for guiding materials in the feed hopper 11 into the pre-dryer, the conveying assembly 3 comprises a conveying pipe 33 fixedly arranged on the bottom plate 2, the conveying pipe 33 extends towards one side of the feed hopper 11 and forms an extending end, meanwhile, a material conveying opening 331 is formed in one end of the conveying pipe 33, and the material conveying opening 331 is communicated with the bottom opening of the feed hopper 11, so that the materials in the feed hopper 11 are conveyed into the conveying pipe 33;

A pedestal 12 is fixed on the frame 1 at the extending end of the conveying pipe 33, a discharging pipe 332 is arranged at the extending end of the conveying pipe 33, the discharging pipe 332 penetrates through the pedestal 12 and is fixedly connected with the pedestal 12, and the discharging pipe 332 is used for outputting materials in the conveying pipe 33 to a pre-dryer;

The conveying assembly 3 further comprises a screw rod 32, the screw rod 32 is of an integral structure formed by a shaft rod 321 and screw blades 322, wherein the screw blades 322 are positioned inside the conveying pipe 33, gaps exist between the outer edges of the screw blades 322 and the inner wall of the conveying pipe 33, and the shaft rod 321 penetrates through the conveying pipe 33 and is movably connected with the conveying pipe 33;

Meanwhile, the conveying assembly 3 further comprises a first motor 31, the first motor 31 is fixedly installed on the bottom plate 2, and the first motor 31 is positioned at the end part of the bottom plate 2 far away from the pedestal 12, in the embodiment, the output end of the first motor 31 is connected with the shaft rod 321, so that the first motor 31 drives the spiral screw rod 32 to rotate, and the material in the conveying pipe 33 is output towards the discharging pipe 332;

a PLC control system is connected to the first motor 31, and the PLC control system is suitable for sending signals to the first motor 31 to control the driving speed and the rotating direction of the output end of the first motor 31, so that the rotating speed of the spiral screw 32 is indirectly regulated to achieve the purpose of controlling the material conveying speed;

In summary, when the material is required to be input into the pre-dryer, the PLC control system sends a signal to the first motor 31, so that the first motor 31 operates and drives the screw blade 322 of the screw rod 32 to rotate through the first motor 31, and at the same time, the material is conveyed into the feed hopper 11 through the feed inlet 111 of the feed hopper 11, and the feed hopper 11 conveys the material into the conveying pipe 33, and under the cooperation of the screw blade 322, the material is conveyed to the discharge pipe 332, so that the material is conveyed into the pre-dryer through the discharge pipe 332.

Embodiment two:

In the first embodiment, when the material is conveyed, because a gap exists between the outer edge of the spiral blade 322 and the inner wall of the conveying pipe 33, and because of the characteristics of the material (such as poor flowability, high viscosity or high particle size, etc.), the material in the conveying pipe 33 may be blocked between the outer edge of the spiral blade 322 and the inner wall of the conveying pipe 33, and the more tightly the spiral blade 322 rotates, the overload of the motor is easily caused, the operation of the equipment is interrupted, and the conveying of the material is affected to some extent;

To solve the above-mentioned problems, this embodiment specifically describes how to prevent the occurrence of jamming between the outer edge of the spiral blade 322 and the inner wall of the delivery pipe 33, specifically:

as shown in fig. 2 to 3, a sliding portion is further mounted on the pedestal 12, the sliding portion is composed of a first slide rail 35 and a first bearing seat 34 slidably mounted on the first slide rail 35, the first slide rail 35 is located near the right end of the conveying pipe 33, and the first slide rail 35 is fixed on the pedestal 12 such that the first bearing seat 34 is adapted to slide on the first slide rail 35 and approach or separate toward the right end of the conveying pipe 33;

Meanwhile, both side end portions of the shaft 321 extend toward the outer sides of both ends of the conveying pipe 33 to form protruding portions, and for convenience of description, the protruding portions on both sides of the shaft 321 are named herein: defining a right protruding end of the shaft 321 as a first end, and a left protruding end of the shaft 321 as a second end;

as shown in fig. 3 to 4, in the present embodiment, the output end of the first motor 31 is not directly connected to the second end of the shaft 321, and an adjusting mechanism 4 is disposed between the second end of the shaft 321 and the output end of the first motor 31, and the adjusting mechanism 4 is used for controlling the movement of the screw 32;

the first end of the shaft rod 321 is mounted on the first bearing seat 34, and as the shaft rod 321 is movably connected with the conveying pipe 33, the shaft rod 321 is suitable for being driven by the outside, and drives the shaft rod 321 to reciprocate along the axial direction of the shaft rod 321 through the cooperation of the first bearing seat 34, indirectly drives the helical blade 322 to synchronously move along with the shaft rod 321, and pushes the material between the outer edge of the helical blade 322 and the inner wall of the conveying pipe 33 to move;

A retention chamber 333 is reserved in the conveying pipe 33 at the right side of the discharging pipe 332, and the right end part of the spiral blade 322 on the spiral screw 32 is positioned close to the discharging pipe 332, wherein the retention chamber 333 is used for providing a movable space when the spiral blade 322 moves;

as shown in fig. 4 to 5, the adjusting mechanism 4 includes a fixed seat 41 fixedly mounted on the base plate 2, a second slide rail 42 is mounted on the fixed seat 41, and a slide plate 43 slidably mounted on the second slide rail 42, and the slide plate 43 is adapted to slide on the second slide rail 42 and along the direction in which the second slide rail 42 is disposed;

At least two groups of second bearing blocks 44 are fixed on the second sliding rail 42, and a connecting shaft 45 is installed on the second bearing blocks 44, and the right end part of the connecting shaft 45 is fixedly connected with the second end of the shaft rod 321, so that the sliding plate 43 is suitable for driving the connecting shaft 45 to move under external driving, and indirectly drives the shaft rod 321 to move through the connecting shaft 45;

An adjusting part is arranged at the bottom of the sliding plate 43 and used for driving the sliding plate 43 to slide on the second sliding rail 42, the adjusting part comprises a second motor 46, a driving shaft 461 is connected to the output end of the second motor 46, meanwhile, a containing groove 412 is formed on the fixing seat 41, and the driving shaft 461 is arranged in the containing groove 412 in a bearing way, so that the second motor 46 is suitable for driving the driving shaft 461 to rotate in the containing groove 412;

The adjusting part further comprises a rack 47 fixed at the bottom of the sliding plate 43 and an adjusting gear 48 matched with the rack 47, the rack 47 is meshed with the adjusting gear 48, and the adjusting gear 48 is fixedly arranged on the driving shaft 461, so that the driving shaft 461 is suitable for driving the adjusting gear 48 to rotate;

When the screw rod 32 needs to be driven to move, the second motor 46 drives the driving shaft 461 to rotate and indirectly drives the adjusting gear 48 to rotate, and under the cooperation of the rack 47 and the adjusting gear 48, the sliding plate 43 is driven to slide along the second sliding rail 42, the connecting shaft 45 drives the shaft rod 321 to move along the axial direction of the shaft rod 321 and indirectly enables the screw blade 322 to move along the inner wall of the conveying pipe 33, so that the material between the outer edge of the screw blade 322 and the inner wall of the conveying pipe 33 is pushed by the movement of the screw blade 322, and the purpose of preventing the material from being blocked between the outer edge of the screw blade 322 and the inner wall of the conveying pipe 33 is realized;

Meanwhile, the positions of the connecting shaft 45 and the screw 32 are limited, when the sliding plate 43 is positioned at the left end of the second sliding rail 42, the connecting shaft 45 and the screw 32 are in an initial state, and when the sliding plate 43 is positioned at the right end of the second sliding rail 42, the connecting shaft 45 and the screw 32 are in an extending state;

As shown in fig. 5-6, a driving sleeve 5 is fixedly installed near the output end of the first motor 31, a driving cavity 51 is formed on the driving sleeve 5, meanwhile, a driving wheel 451 is arranged at the left end part of the connecting shaft 45, a plurality of groups of first teeth 452 are formed on the outer ring of the driving wheel 451, the driving wheel 451 forms a gear structure, tooth grooves 52 matched with the first teeth 452 of the driving wheel 451 are formed on the inner wall of the driving cavity 51, so that the driving wheel 451 is suitable for being clamped in the driving cavity 51, and in the embodiment, the driving wheel 451 is always positioned in the driving cavity 51;

When the first motor 31 drives the driving sleeve 5 to rotate, the driving wheel 451 is clamped in the driving cavity 51 through the cooperation of the first teeth 452 and the tooth grooves 52, the connecting shaft 45 is indirectly driven to rotate, and the screw rod 32 is driven to rotate through the connecting shaft 45, so that the purpose of conveying materials is achieved;

Meanwhile, the second motor 46 is also electrically connected with the PLC control system to control the rotation of the second motor 46 and switch between the second motor 46 and the first motor 31;

In summary, when the material needs to be conveyed, the PLC control system sends a signal to the first motor 31 to drive the first motor 31 to operate so as to drive the driving sleeve 5 to rotate, and drives the shaft lever 321 to rotate through the transmission of the connecting shaft 45, so that the helical blade 322 rotates, then the material is input into the feed hopper 11 through the feed inlet 111, and the feed hopper 11 conveys the material into the conveying pipe 33 through the feed inlet 331, and simultaneously conveys the material entering the conveying pipe 33 to the discharge pipe 332 under the action of the rotation of the helical blade 322;

After the helical blade 322 rotates for a certain time, the PLC control system sends a signal to the first motor 31 at this time to stop the operation of the first motor 31, then the PLC control system drives the second motor 46 to drive the driving shaft 461 to rotate, and under the cooperation of the adjusting gear 48 and the rack 47, the connecting shaft 45 on the sliding plate 43 is driven to move along the setting direction of the second sliding rail 42, so that the helical blade 322 on the shaft rod 321 is indirectly driven to move towards the right side of the discharging pipe 332 under the action of the connecting shaft 45, the helical blade 322 is made to enter an extending state, and then the material between the outer edge of the helical blade 322 and the gap between the outer edge of the conveying pipe 33 is pushed out, so that the situation of preventing the outer edge of the helical blade 322 and the inner wall of the conveying pipe 33 from being blocked is realized;

After the position of the sliding plate 43 is fixed, the PLC control system stops driving the second motor 46, then drives the first motor 31, drives the spiral screw 32 to rotate reversely at a low speed for a short time through the first motor 31, can clean the inner wall of the conveying pipe 33 to a certain extent, then drives the spiral screw 32 to rotate normally by the first motor 31, and continues conveying materials under the action of rotation of the spiral blades 322;

When the screw blade 322 is in the extended state and rotates for a certain time again, the PLC control system sends a signal to the first motor 31, so that the first motor 31 stops operating, then the PLC control system drives the second motor 46, and under the cooperation of the adjusting part, drives the connecting shaft 45 to return to the original position, and indirectly drives the screw rod 32 to return to the original state, so as to push out the material between the outer edge of the screw blade 322 and the gap of the inner wall of the conveying pipe 33, and after the position of the connecting shaft 45 is stable, the PLC control system stops driving the second motor 46, then drives the first motor 31, drives the screw rod 32 to rotate, and continues conveying the material.

Embodiment III:

In the second embodiment, the driving wheel 451 at the end of the connecting shaft 45 is clamped in the driving sleeve 5 by the cooperation of the first teeth 452 and the tooth grooves 52, so that the driving wheel 451 is suitable for moving in the driving sleeve 5, but in the process of moving the connecting shaft 45, the connecting shaft 45 drives the driving wheel 451 to synchronously move, however, due to the cooperation of the first teeth 452 and the tooth grooves 52, when the driving wheel 451 moves in the driving sleeve 5, the driving wheel 451 receives a certain resistance, and thus a certain influence is caused on the movement of the connecting shaft 45;

to solve the above-described problems, the present embodiment specifically illustrates how to eliminate the influence of the resistance force applied to the drive wheel 451, so that the connecting shaft 45 is adapted to move smoothly, specifically:

As shown in fig. 5 to 7, a side plate 411 is fixedly installed on the left side of the fixed seat 41, a steering mechanism 6 is installed on the side plate 411, the steering mechanism 6 comprises an outer gear ring 61 which is installed on the side plate 411 by a bearing, the outer gear ring 61 is fixedly connected with the driving sleeve 5 and forms a barrel structure, so that the driving sleeve 5 is suitable for driving the outer gear ring 61 to rotate under the driving of the first motor 31;

Two groups of planet gears 62 are arranged on the inner side of the outer gear 61, the two groups of planet gears 62 are arranged on the side plate 411 in a bearing manner, and the two groups of planet gears 62 are meshed with the inner teeth of the outer gear 61, so that when the outer gear 61 rotates, the two groups of planet gears 62 are driven to rotate;

meanwhile, the driving wheel 451 is suitable for being meshed with the two groups of planetary gears 62 and is positioned at the center of the outer gear ring 61, so that under the action of the first motor 31, the driving sleeve 5 is driven to rotate, the outer gear ring 61 is indirectly driven to rotate, the two groups of planetary gears 62 are driven to rotate, and under the cooperation of the two groups of planetary gears 62, the driving wheel 451 is driven to reversely rotate relative to the outer gear ring 61, and then a planetary gear structure is formed;

In the present embodiment, the connecting shaft 45 penetrates through the side plate 411 and is movably connected with the side plate 411, and the driving wheel 451 is adapted to be separated from the driving cavity 51 of the driving sleeve 5;

In summary, when the material needs to be conveyed, the PLC control system drives the first motor 31, and drives the connecting shaft 45 to rotate through the cooperation between the driving sleeve 5 and the driving wheel 451, so as to indirectly drive the screw 32 to rotate (at this time, the screw 32 is in an initial state), and simultaneously conveys the material into the conveying pipe 33 through the feeding hopper 11, and further conveys the material in the conveying pipe 33 to the discharging pipe 332 through the rotation action of the screw 32;

For convenience of explanation, the rotation direction of the driving sleeve 5 is limited, and at this time, the driving sleeve 5 drives the screw 32 to rotate, and the rotation direction of the screw 32 for conveying the material is set as normal rotation;

After the material is conveyed for a certain time, the PLC control system stops driving the first motor 31, then drives the second motor 46 to operate, drives the driving shaft 461 to rotate, and under the cooperation of the adjusting gear 48 and the rack 47, enables the sliding plate 43 to move towards the right end part of the second sliding rail 42, simultaneously drives the connecting shaft 45 to move through the second bearing 44, and indirectly drives the spiral blade 322 to move towards the right side of the discharging pipe 332 through the shaft rod 321, so that the spiral blade 322 enters an extending state, simultaneously the outer edge of the spiral blade 322 pushes the material between the outer edge of the spiral blade 322 and the inner wall of the conveying pipe 33, and simultaneously the material between the spiral blade 322 moves synchronously along with the spiral blade 322, thereby preventing the material clamping between the outer edge of the spiral blade 322 and the inner wall of the conveying pipe 33;

during the movement of the connecting shaft 45, the driving wheel 451 is driven to be separated from the driving sleeve 5, and the driving wheel 451 is made to approach to the planetary gears 62, so as to mutually engage the driving wheel 451 with the two groups of planetary gears 62;

When the driving wheel 451 is meshed with the two groups of planetary wheels 62, the PLC control system stops driving the second motor 46, then drives the first motor 31, drives the outer gear ring 61 to rotate positively through the driving sleeve 5, and under the cooperation of the planetary wheels 62 and the driving wheel 451, the driving wheel 451 drives the connecting shaft 45 to rotate reversely relative to the driving sleeve 5 (the rotation speed at the moment is controlled to rotate at a low speed by the first motor 31), and drives the spiral blades 322 on the spiral screw 32 to rotate reversely through the connecting shaft 45, so that caking on the inner wall of the conveying pipe 33 is cleaned to a certain extent, and the cleaning effect on the inside of the conveying pipe 33 is realized;

When the spiral blade 322 rotates reversely for one circle (the number of the spiral blade 322 rotates reversely is determined according to the actual situation and is not limited excessively), the PLC control system stops driving the first motor 31 to rotate reversely, and enables the driving sleeve 5 to rotate in the direction (at the moment, the driving sleeve 5 is at the normal conveying rotation rate), and drives the spiral blade 322 of the spiral screw 32 to rotate positively under the cooperation of the steering mechanism 6 so as to convey the materials rapidly;

When the spiral blade 322 is in the extending state and rotates for a certain time again, the PLC control system stops driving the first motor 31, and the PLC control system drives the second motor 46, and under the cooperation of the adjusting part, the spiral blade 322 is driven by the connecting shaft 45 to return to the initial state, so that the material between the outer edge of the spiral blade 322 and the gap of the inner wall of the conveying pipe 33 is pushed out;

Meanwhile, in the process of restoring the connecting shaft 45 to the initial state, the connecting shaft 45 drives the driving wheel 451 to deviate from between the two groups of planetary gears 62, then the driving wheel 451 is enabled to continuously approach to the driving sleeve 5, and the driving wheel 451 is enabled to enter the driving sleeve 5, so that the first motor 31 is suitable for driving the connecting shaft 45 to rotate through the cooperation of the driving wheel 451 and the driving sleeve 5;

After the position of the connecting shaft 45 is stable, the PLC control system stops driving the second motor 46, then drives the first motor 31, and drives the screw rod 32 to rotate by the connecting shaft 45 through the cooperation of the driving wheel 451 and the driving sleeve 5, and continues to convey the materials;

In summary, under the forward rotation of the first motor 31, the material is normally conveyed, the screw 32 is switched between the initial state and the extended state by the cooperation of the adjusting portion, and the screw 32 is driven to rotate by the first motor 31 by the cooperation of the steering mechanism 6 and the driving wheel 451, so that the material is prevented from being blocked between the outer edge of the screw blade 322 and the inner wall of the conveying pipe 33 on the premise that the conveying efficiency of the material is not affected.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pre-dryer screw feed hopper comprising:

a frame (1), wherein a bottom plate (2) is arranged on the bottom of the frame (1);

-a feed hopper (11), which feed hopper (11) is fixed to the frame (1);

conveying assembly (3), this conveying assembly (3) install in on bottom plate (2), its characterized in that: the transport assembly (3) comprises:

A conveying pipe (33), wherein the conveying pipe (33) is communicated with the feed hopper (11), and a discharge pipe (332) is arranged at the position, close to the right end, of the conveying pipe (33);

The spiral screw (32), the spiral screw (32) is of an integral structure composed of a shaft lever (321) and spiral blades (322), the spiral blades (322) are positioned in the conveying pipe (33), and the shaft lever (321) penetrates through the conveying pipe (33) and is movably connected with the conveying pipe (33);

An adjusting mechanism (4), wherein the adjusting mechanism (4) is provided with a connecting shaft (45) fixedly connected with the shaft lever (321), and a driving wheel (451) is arranged on the left end part of the connecting shaft (45);

A first motor (31), wherein a driving sleeve (5) is fixed on the output end of the first motor (31), and the driving wheel (451) is suitable for being clamped in the driving sleeve (5);

wherein: the connecting shaft (45) is suitable for driving the shaft lever (321) to move under the external driving force so as to drive the spiral blade (322) to move along the inner wall of the conveying pipe (33) to prevent the clamping between the outer edge of the spiral blade (322) and the inner wall of the conveying pipe (33);

The adjusting mechanism (4) comprises a fixed seat (41) and a second sliding rail (42) arranged on the fixed seat (41), a sliding plate (43) is arranged on the second sliding rail (42) in a sliding mode, a second bearing seat (44) is fixedly arranged on the sliding plate (43), and the connecting shaft (45) is arranged on the second bearing seat (44);

the bottom of the sliding plate (43) is provided with an adjusting part, the adjusting part comprises a second motor (46) and a driving shaft (461) connected with the output end of the second motor (46), the driving shaft (461) is fixedly provided with an adjusting gear (48), and the bottom of the sliding plate (43) is provided with a rack (47) meshed with the adjusting gear (48);

A pedestal (12) is fixed on the right side of the frame (1), a sliding part is arranged on the pedestal (12), the sliding part consists of a first sliding rail (35) and a first bearing seat (34) which is slidably arranged on the first sliding rail (35), and the right end part of the shaft lever (321) is arranged on the first bearing seat (34);

A first tooth (452) is arranged on the outer ring of the driving wheel (451), a driving cavity (51) is formed in the driving sleeve (5), a tooth groove (52) which is clamped with the first tooth (452) is formed in the inner wall of the driving cavity (51), and the driving wheel (451) is suitable for being clamped into the driving cavity (51) under the cooperation of the first tooth (452) and the tooth groove (52);

A side plate (411) is fixed on the left side of the fixed seat (41), a steering mechanism (6) is arranged on the side plate (411), and the steering mechanism (6) comprises an outer gear ring (61) which is arranged on the side plate (411) in a bearing way;

The outer gear ring (61) is fixedly connected with the driving sleeve (5) and forms a barrel structure, and the outer gear ring (61) is suitable for being driven by the first motor (31) to synchronously rotate with the driving sleeve (5).

2. A pre-dryer screw feed hopper as claimed in claim 1, wherein: the drive wheel (451) is always located within the drive chamber (51), the drive wheel (451) being adapted to move within the drive chamber (51).

3. A pre-dryer screw feed hopper as claimed in claim 2, wherein: two groups of planet gears (62) are arranged on the inner side of the outer gear ring (61), the two groups of planet gears (62) are arranged on the side plate (411) in a bearing mode, and the two groups of planet gears (62) are meshed with the inner side of the outer gear ring (61);

The driving wheel (451) is adapted to two groups of planetary gears (62), and the driving wheel (451) is adapted to be driven by the sliding plate (43) to approach the planetary gears (62) and to be meshed with the two groups of planetary gears (62).

4. A pre-dryer screw feed hopper as claimed in claim 3, wherein: the first motor (31) and the second motor (46) are electrically connected with a PLC control system, and the PLC control system is suitable for performing switching control between the second motor (46) and the first motor (31) and controlling the driving speed and the rotation direction of the output end of the first motor (31).